Apparatus for stripping articles from forms



May 16, 1950 J. A. WEBER ETAL APPARATUS FOR STRIFPING ARTICLES FROM FORMS Filed Feb. 2'7, 1947 I Jaye 272E125 John fi'flfebsa EdwaEafi-Tsak Patented May 16, 1950 APPARATUS FOR STRIPPING ARTICLES FROM FORMS J ohnAYWeber and Edward A. Tck, Akron, Ohio,

assignors to The B. F. Goodrich Company, New. York, N. Y., acorporation'of New York Application February 27, 1947;; Serial No. 731,276"

6 Claims.

Thisinventionrelates to. the stripping of articlesfrom forms and is. useful especially in stripping articlesof' stretchable material from the formsuponwhichthey. have been made.

In the productionof .iiexible and elastic ink reservoirs for fountain pens, commonly known as pen sacs, the. articles have been formed by deposit of rubber composition -or other rubberlike material and have been vulcanized while on the *forms. mount-"acplurality, ofrforms on a holding bar for simultaneous manufacture. After vulcanization the articles requirestripping'from the forms.

Objects of the present invention. are to provide efiectively for stripping 'of'the articles With-.- out manual effort, to provide for simultaneous stripping of a plurality of articles; to provide for assisting the removalby suction as well as fluid; pressure, and to prevent over-inflationr-of the articlesxrduring A the stripping operationr These and other objects .wilbappear frometh'e following; description and the accompanying drawings.

Of the drawings:

Fig. 1 is a front elevation of apparatus constructed in accordance with and embodying the invention, parts being broken away.

Fig. 2 is a sectional view thereof, taken on line 22 of Fig. 1.

Fig. 3 is a detail sectional view of the stripping instrumentalities and an article supported in stripping position.

Fig. 4 is a similar view with the article partially stripped from the form.

Referring to the drawings, the numeral H] designates the frame of the apparatus which preferably has a pair of inclined top rails ll, l2 for supporting a bar l3 from which forms I 4 are suspended. A shoulder [5 may be provided on the frame to locate the bar in stripping position. The forms I4 are arranged along the bar at regular intervals and each has an article l6 of rubber or other rubber-like material thereon which has been formed by deposit of material from a solution or dispersion thereof and has been vulcanized on the form.

For stripping the articles from the forms, a plurality of jet pipes l8, [9 are mounted on the frame and directed downwardly toward the mouth of the article and against the form. The jet pipes are preferably arranged opposite each other with two jet pipes directed at each form on the lbar.l 3. All of the jet pipes are connected to manifolds", 2| which are in turn connected to a source of fluid pressure, such as a com- Itehas been found convenient to pressed air supply. 23; through a throttle. valve 22., Afoot operated lever. 24 is connectedltothe. valverarm 2 5.by alink.26 and maybedepressed to. open thevalve against tension. of a coil Spring. 21'.- The arrangement is such that .i,an' operator. may-depress the. lever 24- and thereby dischargeecompressed air against. all the L forms simultaneously To-rprevent rupture-of. the articles by. over,- inflation due-v to ballooning of. the articles ju nder' pressureof therair; and to assistjin stripping the articles bythe action of I suction, a...-tubular. member is: supportedabout each form co,- axially thereof by the. frame. extend substantially throughca .tubularmember 311-. with the mouth of the articleonlth'e form within the tubular. member. The arrangement is- .such. that the jet-pipes 1 8, [9. simultaneously direct a blast of r compressed air. at the. mouth. of the article blowing: into-the. mouth of the. article. Atthersame time; excess. air fl'owsdow-nwardly. along... the. tubeabout the member, the. article and the tube providing a reduced pressure about the article which tends to draw the article away from the form, as the air is entering the neck. Thus, this action of suction assists in moving the article from the form and opening it to receive the blast of air. Over-inflation is prevented by the confining walls of the tube, which nevertheless are lubricated by flow of air between the tube and the article with the result that the article is stripped from the form without tearing.

A container Si is provided to catch the articles.

In use, a bar [3 of forms is placed in position on the frame and the operator depresses the lever 24 to release air under pressure. The articles are blown from their forms into the container.

Variations may be made without departing from the scope of the invention as it is defined by the following claims:

We claim:

1. Apparatus for stripping an elastic article from a form, said apparatus com-prising a tubular member open at both ends, means for supporting a form with an article thereon within and in determinate fixed relation to the tubular member, and means mounted in determinate relation to said tubular member and in spacedapart relation to the article on said form for directing a fluid under pressure into one end of the tubular member and against the mouth of The-. formspeachv 3 the article without contact of said fluid directing means with the article.

2. Apparatus for stripping an elastic article from a form, said apparatus comprising a tubular member open at both ends, means for supporting a form with an article thereon within and in determinate fixed relation to the tubular member, and a jet pipe mounted in determinate relation to said tubular member and in spacedapart relation to the article on said form for directing air under pressure into one end of the tubular member and against the mouth of the article without contact of said jet pipe with the article.

3. Apparatus for stripping an elastic article from a form, said apparatus comprising a tubular member open'at both ends, means for supporting a form with an article thereon within and in determinate fixed relation to the tubular member, and a plurality of jet pipes mounted in determinate relation to said tubular member and in spaced-apart relation to the article on said form to direct air under pressure from opposite sides of the article into one end of the tubular member and against the mouth of the article without contact of said jet pipes with the article.

4. Apparatus for stripping an elastic openended article from a form, said apparatus comprising means for supporting the form with the article thereon in a depending relation, a tubular member open at both ends positioned to surround the article in spaced relation thereto with the openend of the article within the tubular member, and jet pipes mounted in determinate relation to said tubular member and in spacedapart relation to the article on said form to direct air under pressure downwardly into the upper end of said tubular member and against the open end of the article Without contact of said jet pipes with the article.

5. Apparatus for stripping elastic open-ended articles from their forms, said apparatus comprising means for supporting a group of forms with articles thereon in depending relation, a series of tubular members open at both ends, each positioned to surround one of the. articles in spaced relation thereto with the open end of the article within the tubular member, and jet pipes mounted at each tubular member in determinate relation to said tubular member and in spaced apart relation to the article therein to direct air under pressure downwardly into the upper end of said tubular member and against the open end of the article therein without contact of said jet pipes with the article.

6. Apparatus for simultaneously stripping a plurality of open-ended elastic articles from a plurality of forms mounted upon a carrier, said apparatus comprising means for supporting the carrier in determinate position, a series of tubular members open at both ends, each positioned in relation to the supportingmeans to surround one of the forms and the article thereon in spaced-apart non-contacting relation thereto with the open end of the article within thetubu- REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,567,007 Raiche Dec. 22, 1925 2,039,626 Raiche May 5, 1936 2,217,213 Bratrine Oct. 8, 1940 2,384,056 Tritt Sept. 4, 1945 

